Printer friendly page

Honeywell TK300-15 Heating Expansion Tank

SKU: 376400

Save 42% · Retail: $88.47

In Stock and Ready to Ship

Ships From Price Qty
Illinois Warehouse
Ships in 4-6 Days
$51.73/ea 3
Order From Manufacturer
Available to Ship in 3-4 weeks

About the Honeywell TK300-15

Honeywell TK300-15 2 Gallon Heating Expansion Tanks. The Honeywell Expansion Tanks absorb hot water expansion in closed heating systems. They are equipped with butyl diaphragms to separate the air from the system water. Pre-pressurized, the tank keeps fluids circulating and maintains minimum pressure.

Product Details

Product: Tank
Manufacturer: Honeywell
Use: Heat Only
Mpn # TK300-15
Weight 0.85 lbs.

Product Features

  • Butyl/EPDM diaphragm- 9 times better than natural rubber
  • Deep-drawn steel tank
  • Controls system pressure
  • Air-tight cushion-factory pre-charged to 12 psig and 100% tested


4.5 out of 5 rating is our rating for PlumbersStock, we got that rating because we have lots of experience and great people with expertise in plumbing. BUT WE WANT YOUR HELP. This product doesn't have any reviews yet, and we don't want to write our own reviews. It is more valuable to us that the customers get to share their experience with our products. Please, if you have any experience with this product, take a moment to share and help someone else who is trying to make a decision. Thank you!

Questions & Answers


This expansion tank has a 1/2" Male Iron Pipe Connection


12 Month Warranty from installation

Shopper Award